Pump-elevator.



PATENTED APR. 30, 1907.

T. N. & J. A. LONDON.

PUMP ELEVATOR. APPLICATION FILED DEC. 28 1905.

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I o paratus UNITED STATES PATENT ()FFTCE.

THOMAS N. LONDON AND JAMES A. LONDfTI T OF MARQUAND, MISSOURI, AS- SIGNORS OF ONE-FOURTH TO ROBERT J. LONDON AND ONE-FOURTH TO WILLBERN O. SIMMONS, or TWELVEMILE, MISSOURI.

PUMP-ELEVATOR.

Specification of Letters Patent.

P atentecl April 30, 1907.

Application filed December 28, 1905. Serial No. 293,642.

To a rule/m, w Duty concern.-

Be it known that we, THOMAS N. LONDON and JAMES A. LONDON, citizens of the United States, residing at Marquand, in the county of Madison and State of Missouri, have invented a new and useful Pump-Elevator, of which the following is a specification.

This invention relates to water elevators, and is designed to provide an improved apof this character to maintain a continuous pressure upon a body of water so as to force the same through the Service pipes of a dwelling or other building.

The apparatus is particularly designed for domestic use in suburban and similar localities where city water Service is not in use.

A further object of the invention is to enable the convenient resetting of the pressure mechanism when the latter has become in- 0 active or its power reduced below the point necessary to effectually force the water through the service pipes.

iNith these and other objects in view, the present invention consists in the combination and arrangement of parts as will be hereinafter more fully described, shown in the accompanying drawing and particularly pointed out in the appended claims, it being understood that changes in the form, propor- 0 tion, size and minor details may be made,

4.0 employ a storage 4 5 equipped with a strainer i and within the scope of the claims without departing from the spirit or Sacrificing any of the advantages of the invention.

In the drawing, there has been shown a Side elevation of a water elevator embodying the features of the present invention, parts being broken away to show certain interior arrangements.

In carrying out the present invention l. tank 1 which is in commu nication with a well, cistern or the like shown at 2, by means of a supply pipe piercing the tank 1 adjacent its lower end and having its other end submerged in the reservoir 2 and a check valve, the case of which has been indicated at 5. By this arrangement .a supply of clear water is insured for the tank 1, and the return of the water from the tank to the reservoir is prevented by the check valve 5.

\Vithin the pressure tank 1 there is a plun- 'er 6 having a stem 7 rising through a stuffi ng box in the top of the tank. Supported upon the top of the tank and embracing the plunger rod 7 is a powerful helical spring 9 having its large end engaging the top of the tank and its Small end bearing against a cross head 19 carried by the upper end of the plunger rod and held thereon by a nut 11 or other removable fastening. The tendency of the Spring 9 is to elevate the plunger and thereby force the water in the tank 1 upwardly through the service pipe 12 which leads from the top thereof throughout the building, said service pipe being provided at various points with draw-oil valves or spigots one of which has been shown at 13. The plunger 6 is provided with a plurality of ports or Openings 14 extending entirely through the same and closed by Suitable :flap valves 15 which are hinged to the upper side of the plunger and are held closed by the pressure of the water when the plunger is being elevated.

For the purpose of resetting the plunger or forcing the same down to the bottom of the pressure tank 1, an arched support 16 is provided upon the top of the tank 1 so as to straddle the spring 9 and the plunger rod. Upon the top of this support there is an arched bracket 17, the top of the bracket and the support being pierced by a threaded stem 18 having its upper end provided with a suitable handle or hand wheel 19, whereby the stem 18 may be raised and lowered. l/Vhen the spring 9 .is expanded to its limit, the hand wheel 19 is manipulated to force the stem 18 down against the top of the plunger rod 7, thereby to force the plunger back to the bottom of the tank, during which movement the valves 15 will open upwardly under the pressure of the water beneath the plunger and thereby permit of the plunger being forced down through the water to the bottom of the tank.

With the plunger at the bottom of the pressure tank 1., and all of the draw-oil valves or spigots of the service pipe closed, the apparatus will be in a state ofinaction, while the water will be under pressure. Upon opening one or more of the drawofi' valves, the pressure in the service pipe will be relieved and the water will run out of the valves, the reduced pressure above the plunger 6 will of course permit the latter to rise under the power of the spring 9 and thereby maintain suflicient pressure to force the water above the plunger through the service pipes. During the elevation of the plunger, water will of course be drawn from the reservoir 2 through the pipe 3 and into the bottom of the pressure tank 1 below the plunger, thereby to maintain the pressure tank charged with water without requiring any extraneous means for accomplishing this purpose.

It will, of course, be understood that when the stem 18 has been turned down to force the plunger down to the bottom of the tank 1, it is of course elevated so as to release the spring and permit of the latter being active when pressure is relieved in the service pipes by opening any of the draw-off valves.

Should it be desired to make repairs in the service pipes, the stem 18 should be set down against the top of the plunger rod so as to hold the latter against upward movement.

when pressure is relieved in the service pipes, whereby water is prevented from being forced through the service pipes when repairs are being made in the latter.

Having thus described the invention, what is claimed is 1. A water elevator including a pressure tank for containing a supply of water, a plunger working in the tank and having a plunger rod piercing one side thereof, a spring bearing in opposite directions against the tank and the plunger rod, a support inclependent of the plunger rod, and a threaded resetting stem carried by the support and capable of being forced against the plunger rod to reset the plunger and the spring.

2.}A water elevator including a pressure tank for containing a supply of Water, a plunger working therein and provided with a plunger rod piercing one side of the tank, a cross head upon the outer end of the plunger rod, a helical spring bearing in opposite directions against the tank and the cross head, a support carried by the tank and having a portion disposed beyond and in alinement with the outer end of the plunger rod, and a threaded resetting stem carried by the support in alinement with and separate from the plunger rod, said stem capable of being forced against the plunger rod to reset the plunger and the spring.

In testimony that we claim the foregoing as our own, we have hereto alliXed our signatures in the presence of two witnesses.

THOMAS N. LONDON. JAMES A. LONDON. Witnesses:

F. J. LIMBAUGH, JOHN W. TIRIN. 

